Chinese activist Ai Weiwei combines the chutzpah of Michael Moore, the antic iconoclasm of Duchamp, and the humility of Gandhi, and it's not enough. Nor is the fact that he is China's most famous artist, with shows in Munich and London. Back home, he designed the 2008 Beijing Olympics "Bird's Nest" stadium, but fouled this nest by boycotting the opening of the games, protesting the eviction of poor people to make room for the site. Further offenses include listing the names of the thousands of children killed in the 2008 earthquake when their shoddily constructed schools collapsed, and "celebrating" with a crab dinner when the authorities razed his studio. Alison Klayman's documentary briskly tells his story, much of it recorded by Ai in his own documentaries, on his Web site, and on his Twitter feed. And she captures some of his spirit: on probation after house arrest, his message is "Don't retreat; retweet!"

In a Dream If you find yourself groaning through the first five minutes of Jeremiah Zagar's Academy Award-shortlisted feature documentary about his artist father Isaiah, you might just be its target audience.

Review: The Betrayal As the subject, narrator, and director, with Ellen Kuras, of his own story, Thavisouk Phrasavath has created a film of meandering, almost accidental poignancy.

Review: The Garden The title of Scott Hamilton Kennedy's complex, provocative, ultimately uplifting documentary invariably calls to mind Genesis, and parallels can be drawn.

Ring master At its best, Tyson becomes its subject's psychotherapist, allowing him to disgorge with no judgment and little restraint his memories, fantasies, impulses, and fears.

Review: Not Quite Hollywood Not Quite Hollywood is about the empowerment of a people — through exuberant if excruciatingly cheesy movies.

Review: Defamation Yoav Shamir, a young Israeli documentarian, goes off to America and Eastern Europe with a camera and a question: is anti-Semitism an important concern today for Jews, or are those anxious about it being unduly paranoid?

Review: In a Dream For seven years, Jeremiah Zagar has had the camera rolling as his hippie parents keep their symbiotic marriage afloat — though Isaiah, his fragile painter dad, teeters on the edge of lunacy.